FIELD: pressure processing of metals.
SUBSTANCE: invention can be used to obtain a tubular profile used in bridge and crane structures, in load-bearing coating systems of buildings and structures. By performing technological operations to change the cross section of a round pipe, a pipe with a cross section of a hexagonal equicrural shape is obtained, consisting of a pair of equally wide shelves and two pairs of equally sized inclined faces. The inclined faces form obtuse angles of 120° with the flanges. The ratio of the overall dimensions of the width and height of the section is 1/1.039 along the midline of this section.
EFFECT: increase in the bearing capacity of the tubular profile.
1 cl, 4 dwg, 1 tbl
